Steamboat-propeller.



No. 764,267. PATENTED JULY 5, 1904.

' W. S. BAKER.

STEAMBOAT PROPELLER.

APPLICATION 'EILBD AUG. 1a, 1903.

no momm.

secured, and driving-rods u o UNITED STATES Patented July 5, 1904.

PATENT OFFICE.

WOR"HINGTON S. BAKER, OF PITTSBURG, PENNSYLVANIA.

STEAMBOAT-PROPELLER SPECIFICATION forming part of Letters Patent N0.764,267, dated July 5, 1904.

Application filed August 18, 1903. Serial No. 169,846. (No model.)

To (LZZ whom it may concern.-

Be it known that I, WORT HINeroN S. BAKER, a citizen of the UnitedStates, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement in SteamboatPropellers, of which improvement the following is a speciiication.

This invention relates to certain new and useful improvements insteamboat-propellers, and relates more particularly to propellers whichare adapted to be used in river, canal, or other shallow waters.

The object of this invention is to provide means whereby increased powermay be obtained and also to so construct the apparatus that very littledisturbance of the water will take place, as'the pro1i)ellingpaddlesenter and pass through the water in a substantially vcrtical position.

With the above and other objects in View my invention resides in thenovel combination and arrangement of parts, as will be hereinafter morefully described, and specifically pointed out in the claim.

In describing the invention in detail reference will be had to theaccompanying drawings, forming a part of this application, in which likereference-numerals indicate like parts throughout the several views, inwhich Figure 1 is a side elevation of my improved propelling mechanism.Fig. 2 is a transverse section on the line 2 2 of Fig. 1. Figs. 3 and 4-are details of a modified form of my device.

Referring to the drawings, the referencenumeral 1 indicates the maindriving-shaft, to the ends of which the driving-cranks 2 2 are 9 9 areconnected therewith. The sprocket-wheels 4 1 are suitably secured onsaid shaft in any desired manner, and each of said wheels has formed orsecured thereon the sprocket-wheels 5 5, which are of lesser pitchdiameter than the wheels 4:. Larger sprockets 6, carrying the sprockets7, are mounted on the shaft 8, which is located a suitable distance fromthe shaft 1, and while the sprockets 4 and 5 are placed at such anelevation that the sprocket 4: normally just touches the water thesprockets 6 and 7 are placed at such an elevation that the sprocket 7touches the water, the same being for a purpose to be presentlydescribed.

Endless chains 9 and 10 pass around the sprockets 4 6 and 5 7,respectively, and paddles 11 are suitably secured between said chains,as will be seen by referring to Fig. 2. Guides 12and 1 1 are providedfor the chains where they pass through the water, both to protect saidchains and to maintain the same in a desired elevation between thesprockets.

The chains carrying the paddles pass over the sprockets, and the paddlesenter and will pass through the water in a substantially verticalposition, as the different diameter and elevation of the two sets ofsprockets will cause thepaddles to travel as will be seen by referenceto Fig. 1.

In Figs. 3 and 4; I have shown a single chain 9 in place of the twochains 9 and 10, the paddle 11 being secured in a port13, whichissecured or formed on the links 16 at suitable intervals, and the guide12 prevents the paddle from twisting or turning to the link 16, passingthrough the same.

While I have herein illustrated my invention as being applied to theside of a boat and being driven by cranks and (.lriving-rods, it isobvious that it could be placed at the rear or any other part of theboat and be driven in any desired manner and that various other slightchanges may be made without departing from the general spirit of myinvention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, iS

A device of the type set forth comprising a pair of largesprocket-wheels disposed on opposite sides of the vessel, a smallersprocketwheel rigidly secured to each of the large sproeket-wheels, asecond pair of sprocketwheels disposed on opposite sides of the vesseland of greater diameter than the firstnamed pair, a small sprocket-wheelcarried by each of the last-named sprockets, the sprockets on each sideof the vessel being in longitudinal alinement with one another, long andshort continuous chains carried by each pair of large and smallsprockets, paddles being secured at their upper and lower ends to thelong and short chains respectively, the

sprocket-Wheels being so positioned that the my name in the presence oftwo subscribing large sprocket-Wheel of the first-named pair Witnesses.

and the smaller sprocket-wheel of the last- 7 r named pair both touchthe surface of the Wa- WVOREHINGrlON BAKER 5 ter in the same horizontalplane, substantially In presence of as described. F. O. HENZI,

In testimony whereof I have hereunto signed M. HUNTER.

